Features Fabric/Nylon Response A3 Women's Suspension Women's Specific Aluminum Wire Wishbone Frame That Defines The Perimeter Of The Back panel And Channels The Load To The Center Of The Lumbar Region Ventilated Center Channel Composite Featuring Lifespan Multi-Layer Eva Foam, Women's Specific Shaping, And A Narrower Footprint For Maximum Comfort Lumbar Tune A Removable Eva Shim Offers The User Two Stages Of Contouring In The Lumbar Region For The Perfect Fit Quick swap 3D Precurved Components Description Product Description The extraordinarily capable Deva 70 is a high-performance hiker's dream, thanks to its generous 70-liter capacity and ever-adapting, dynamic Response A3 Women's suspension. From week-long winter outings to transcontinental treks, this women's-specific high-volume pack will never leave you wanting more.